Re:Heat Pumps Work Miracles
by Gibbon1 on Friday March 01, 2019 @02:05PM
(#19284174)
> Counter-intuitively, air sealing is usually the #1 improvement.
I think the hard thing for people to think about is that heat transfer is exponential. But we don't measure it that way. In fact R values are really misleading[1].
Meaning transfer coefficients can vary by orders of magnitude. So it's easy for one source like air leakage to totally swamp every other source.
[1] Figure of merit is really 1/R (smaller is better) not R.
I think the hard thing for people to think about is that heat transfer is exponential. But we don't measure it that way. In fact R values are really misleading[1].
Meaning transfer coefficients can vary by orders of magnitude. So it's easy for one source like air leakage to totally swamp every other source.
[1] Figure of merit is really 1/R (smaller is better) not R.